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Old 05-08-2011, 10:55 PM   #35 (permalink)
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Originally Posted by Joseph Davis View Post
That's interesting.

Not all vehicles run correctly with O2 sensor unplugged; some ECU interpret this as a full lean condition (0 volts on the O2 signal line) and start dumping in fuel. Poor mpg and trailerhitching @ cruise are the usual symptoms.
I heard running the car without the O2 hooked up is very bad for the O2. I heard that since it is suppose to be heated by its heater ciurcuit, when its unplugged, its not getting this, and the hot exhaust gases can ruin it.

Maybe this is wrong, but i'd read up on this before continuing to do that.
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